
What is Recombination of DNA?
Answer
417.3k+ views
Hint: The exchange of genetic material between several chromosomes or different areas of the same chromosome is known as DNA recombination. In these circumstances, recombination and DNA synthesis are used to replace lost material from a sister chromatid.
Complete answer:
Recombination is the process of breaking and recombining fragments of DNA to create new allele combinations. This recombination process results in genetic diversity at the gene level, reflecting changes in DNA sequences between species. Recombination often happens during meiosis in eukaryotic cells, which are cells containing a nucleus and organelles.
Meiosis is a type of cell division in which gametes, or egg and sperm cells, are produced in the initial phase. Maternal and paternal chromosome pairs that are homologous align. The arms of the chromosomes can overlap and temporarily fuse during the alignment, resulting in a crossover. Recombination and the exchange of genetic material between the maternal and paternal chromosomes occurs during crossovers. As a result, offspring may have genetic combinations that differ from those of their parents.
Genes that are more apart on the same chromosome are more likely to undergo recombination, implying that they have a higher recombination frequency. Although isolating a sample of DNA from a group of cells is very simple, locating a specific gene within this DNA sample is comparable to finding a needle in a haystack. Consider the fact that each human cell has about 2 metres (6 feet) of DNA. As a result, even a little tissue sample can contain thousands of kilometres of DNA. Recombinant DNA technology, on the other hand, has made it possible to isolate one gene.
Note:
Recombinant DNA refers to DNA molecules from two different species that are put into a host organism to create new genetic combinations useful in science, medicine, agriculture, and industry. Because the gene is at the centre of all genetics.
Complete answer:
Recombination is the process of breaking and recombining fragments of DNA to create new allele combinations. This recombination process results in genetic diversity at the gene level, reflecting changes in DNA sequences between species. Recombination often happens during meiosis in eukaryotic cells, which are cells containing a nucleus and organelles.
Meiosis is a type of cell division in which gametes, or egg and sperm cells, are produced in the initial phase. Maternal and paternal chromosome pairs that are homologous align. The arms of the chromosomes can overlap and temporarily fuse during the alignment, resulting in a crossover. Recombination and the exchange of genetic material between the maternal and paternal chromosomes occurs during crossovers. As a result, offspring may have genetic combinations that differ from those of their parents.
Genes that are more apart on the same chromosome are more likely to undergo recombination, implying that they have a higher recombination frequency. Although isolating a sample of DNA from a group of cells is very simple, locating a specific gene within this DNA sample is comparable to finding a needle in a haystack. Consider the fact that each human cell has about 2 metres (6 feet) of DNA. As a result, even a little tissue sample can contain thousands of kilometres of DNA. Recombinant DNA technology, on the other hand, has made it possible to isolate one gene.
Note:
Recombinant DNA refers to DNA molecules from two different species that are put into a host organism to create new genetic combinations useful in science, medicine, agriculture, and industry. Because the gene is at the centre of all genetics.
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